A C H A T I N A 



Plate VI. 



Species 18. (Mus. Cuming.) 

 AcHATlNA INDOTATA. Achat, testa oblongo-ovatd, fetmi, 

 vetitricosd, anfraetUius septem, iiiferni lavibus, sitperm 

 gramso-striatis, colunielld arcuatd ; lutescente-albd, 

 strigis latis castanek fidguratis. 

 The unendowed Achatina. SheU oblong-ovate, thin, 

 ventricose, whorls seven in number, smooth round 

 the lower part, granosely striated round the upper 

 part, columella arched ; yellowish-white, marked with 

 broad zigzag cUesnut-brown streaks. 

 Hab. West Africa. 



This shell, of wliich I have examined many specimens, 

 is frequently confounded vrith A. zebra, from which it 

 differs constantly in its proportions and the contour of the 

 columella. The painting, though it assimilates hi a re- 

 markable degree with some varieties of A. zebra, has 

 nevertheless a peculiarity of character about it. 



Species 19. (Mus. Cuming.) 

 Achatina striata. Achat, testa fusiformi-oblongd, an- 

 Jractibiis octo, longitudinaliter co?Mpici(eplicato-striatis, 

 ad suturas erenulatis, columelld contortd, .mbelongato- 

 productd, aperturd parmuscidd, angustd ; opaco-albd. 

 The striated Achatina. Shell fusiformly obloug, 

 whorls eight in number, longitudinally conspicuously 

 plicately striated, crenulated at the sutiu-es, columella 

 twisted, somewhat elongately produced, aperture 

 rather small, uaiTow ; opake white. 

 Buccinum striatum, Miiller, Verm. p. 119. 

 Chemnitz, Conch. Cab. vol. ix. p. Sd. pi. 130. f 1028-9. 

 Hab. Mexico. 



M. Deshayes assigns the A. rosea, Dc Ferussac, and 

 Dr. Pfeiffer the A. Mulleri of the same author, to the old 

 Buccinum striatum of MiiUer ; the species under consi- 

 deration seems, however, to agree fai- better both with 

 Miiller's description and Chemnitz's figures, excluding 

 f. 1030, which is J. Mulleri. 



It is a shell of rather solid growth, opake snowy white, 

 with the striae raised in prominent longitudinal folds. 



5peeics 20. (Mus. Cuming.) 



Achatina ornata. Achat, testd subfusiformi-oblomjd, 

 ventricosiuscttld, anfractibus octo, Imigitudinaliter 

 creberrhm elevato-striatis. ad suturas anguste margina- 

 ti'i, columelld breviusculd, abrupte truncatd, aperturd 

 pared, oblongd ; fulvescente, .strigis brevibus fuscis 

 irregidaribus infra suturas obscure notatu. 



The adorned Achatina. Shell somewhat fusilbrmly 

 obloug, rather ventricose, whorls eight in number, 

 longitudinally very closely elevately striated, narrowly 

 marginated at the sutures, columella rather short, 

 abruptly truncated, aperture small, oblong; light 

 fidvous-brown, obscurely marked beneath the sutures 

 with short, irregidar, brown streaks. 



Pfeiffer, Zietschr. fur. Malac. ISlfi. p. 117. 

 Achatina costulata, Pfeiffer (not of Adams). 



Hab. New Granada. 



Ciu-iously, but obscurely, marked with shoi-t scattered 

 streaks striking out of the sutures. 



Species 21. (Mus. Benson.) 



Achatina Kraussi. Achat, testd oblongo-ovatd, anfrac- 

 tibus septem, parum striatis ant decussatis, columella 

 arcuatd et contortd; nigricastaned, strigis angustis 

 albidis remote fulguratis, columelld et aperturm fauce 

 cceruleo-albis. 



Kravss's Achatina. Shell oblong-ovate, whorls seven 

 in number, but little striated or decussated, colu- 

 mella arched and twisted ; blackish-chesnut, marked 

 with distant narrow white zigzag streaks, columella 

 and interior of the aperture bluish-white. 



Reeve, Pro. Zool. Soc, 1842, p. 5.5. Coach. Syst. vol. ii. 

 pi. 179. f. 19. 



Hab. Port Natal, Coast of Africa. 



Named in honour of Dr. Krauss of Stutgard, %vhose 

 researches in South Afi-ica have been i)roductive of a 

 valuable work on the MoUusca of that district. 



Feljruary, 1849. 



